Who was Jerubbaal?
Judg. 6:32 translated, "they (not Joash, but one, for the townsmen generally) called him Jeroboam, saying, Let Baal fight against him, because he hath thrown down his altar."
They took up Joash's words: "he that will fight for Baal (seeking to put to death the destroyer of his altar) shall be put to death (himself; let us wait) TILL morning (to see, will Baal avenge his own wrong); let Baal fight for himself." When Baal did Gideon, no harm the title Jerub-Baal, the" Baal fighter," became an honourable one.
Besheth, "shame," is substituted for the idol in Jerubbesheth (to comply literally with Exo. 23:13; 2 Sam. 11:21), as in Ishbosheth for Eshbaal (2 Sam. 2:8 ff; 1 Chr. 8:33; 9:39). Philo of Bybhs, in his revision of Sanehoniatho, calls him Hierombal, priest of Jeuo, or Jahve, or Jehovah.
IBSE, "Isaac" (in the public domain) with minor edits.